Crude birth rate Northern Ireland 1971-2021

In 2021, there were 11.6 births per 1,000 people in Northern Ireland, compared with eleven in the previous year. Between 2000 and 2008, Northern Ireland's birth rate increased from 12.8 to 14.4 but started to decline gradually until 2012 when it dropped from 13.9 to 13.3 in just one year. During this provided time period, the birth rate in Northern Ireland was highest in 1971, when it was 20.6 and was at its lowest in 2020 when there were just eleven births per 1,000 people.

Falling birth rates in the UK

For the United Kingdom as a whole, the birth rate fell to 10.2 births per 1,000 people in 2020, before a slight uptick to 10.4 in 2021. After a postwar peak of 18.8 births per 1,000 people in 1964, the UK birth rate fell sharply to just 11.7 by 1977. Between 1977 and 2012 the birth rate fluctuated between 11.3 and 13.9, but declined in every year between 2012 and 2020. In 2021, the UK's fertility rate (the number of births per women) fell to just 1.53, compared with 2.95 in 1964. Since 1973, the UK has fallen below the minimum replacement level fertility rate of 2.1, and without immigration would likely see its population decline in the long term.

Global demographic trends

The considerable decline in the UK's fertility rate in recent decades is not an isolated phenomenon. As of 2024, Africa was, at 4.12, the only continent to have a fertility rate higher than the global average of 2.31. Several countries, mainly in East Asia and Europe, have far lower fertility rates than the UK or the global average, however. South Korea provides the most dramatic example of this trend, with its fertility rate falling from 6.33 in 1960 to just 1.11 by 2020. By the 2080s, it is expected that, as Africa's fertility rate converges with the rest of the world, the global population will peak at around 10.4 billion and start to decline.